<?php

namespace app\admin\controller;

use app\admin\model\Grade;
use app\admin\model\School;
use app\admin\model\User;
use app\common\controller\Backend;
use Exception;
use fast\Tree;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Reader\Csv;
use PhpOffice\PhpSpreadsheet\Reader\Xls;
use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
use think\Db;
use think\exception\PDOException;
use think\exception\ValidateException;
use think\Model;

/**
 * 班级管理
 *
 * @icon fa fa-circle-o
 */
class Gradeclass extends Backend
{

    /**
     * GradeClass模型对象
     * @var \app\admin\model\GradeClass
     */
    protected $model = null;
    protected $modelValidate = true;
    protected $modelSceneValidate = true;
    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\GradeClass;
        $grade_ =  (new Grade())->select();
        $grade = array_column($grade_,'gradeName','grade');
        $this->assignconfig('gradeConfig',$grade);

    }



    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */


    /**
     * 查看
     */
    public function index()
    {

        //当前是否为关联查询
        $this->relationSearch = true;
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            $grade_id = $this->request->post('grade_id');
            if ($grade_id){
                $where['grade_id'] = $grade_id;
            }
            $list = $this->model
                    ->with(['grade'])
                    ->where($where)
                    ->order($sort, $order)
                    ->paginate($limit);

            foreach ($list as $row) {
                $row->visible(['id','name','create_time']);
                $row->visible(['grade']);
				$row->getRelation('grade')->visible(['gradeName']);
            }

            $result = array("total" => $list->total(), "rows" => $list->items());

            return json($result);
        }
        return $this->view->fetch();
    }


    public function add()
    {
        if (false === $this->request->isPost()) {
        return $this->view->fetch();
    }
        $params = $this->request->post('row/a');
        if (empty($params)) {
            $this->error(__('Parameter %s can not be empty', ''));
        }
        $params = $this->preExcludeFields($params);

        if ($this->dataLimit && $this->dataLimitFieldAutoFill) {
            $params[$this->dataLimitField] = $this->auth->id;
        }
        $result = false;
        Db::startTrans();
        try {
            //是否采用模型验证
            if ($this->modelValidate) {
                $name = str_replace("\\model\\", "\\validate\\Gradeclass", "Gradeclass");
                $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
                $this->model->validateFailException()->validate($validate);
            }
            $result = $this->model->allowField(true)->save($params);
            Db::commit();
        } catch (ValidateException|PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($result === false) {
            $this->error(__('No rows were inserted'));
        }
        $this->success();
    }


    public function edit($ids = null)
    {
        $row = $this->model->get($ids);
        if (!$row) {
            $this->error(__('No Results were found'));
        }
        $adminIds = $this->getDataLimitAdminIds();
        if (is_array($adminIds) && !in_array($row[$this->dataLimitField], $adminIds)) {
            $this->error(__('You have no permission'));
        }
        if (false === $this->request->isPost()) {
            $this->view->assign('row', $row);
            return $this->view->fetch();
        }
        $params = $this->request->post('row/a');
        if (empty($params)) {
            $this->error(__('Parameter %s can not be empty', ''));
        }
        $params = $this->preExcludeFields($params);
        $result = false;
        try {
            //是否采用模型验证
            //班级不能重复
            $has =  $this->model->where("id","<>",$ids)->where("grade_id",$params['grade_id'])->where("name",$params['name'])->find();
            if ($has){
                $this->error("班级不能重复");
            }
            $result = $row->allowField(true)->save($params);
        } catch (ValidateException|PDOException|Exception $e) {
            $this->error($e->getMessage());
        }
        if (false === $result) {
            $this->error(__('No rows were updated'));
        }
        $this->success();
    }

    public function import()
    {
        $file = $this->request->request('file');
        if (!$file) {
            $this->error(__('Parameter %s can not be empty', 'file'));
        }
        $filePath = ROOT_PATH . DS . 'public' . DS . $file;
        if (!is_file($filePath)) {
            $this->error(__('No results were found'));
        }
        //实例化reader
        $ext = pathinfo($filePath, PATHINFO_EXTENSION);

        if (!in_array($ext, ['csv', 'xls', 'xlsx'])) {
            $this->error(__('Unknown data format'));
        }
        if ($ext === 'csv') {
            $file = fopen($filePath, 'r');
            $filePath = tempnam(sys_get_temp_dir(), 'import_csv');
            $fp = fopen($filePath, 'w');
            $n = 0;
            while ($line = fgets($file)) {
                $line = rtrim($line, "\n\r\0");
                $encoding = mb_detect_encoding($line, ['utf-8', 'gbk', 'latin1', 'big5']);
                if ($encoding !== 'utf-8') {
                    $line = mb_convert_encoding($line, 'utf-8', $encoding);
                }
                if ($n == 0 || preg_match('/^".*"$/', $line)) {
                    fwrite($fp, $line . "\n");
                } else {
                    fwrite($fp, '"' . str_replace(['"', ','], ['""', '","'], $line) . "\"\n");
                }
                $n++;
            }
            fclose($file) || fclose($fp);

            $reader = new Csv();
        } elseif ($ext === 'xls') {
            $reader = new Xls();
        } else {
            $reader = new Xlsx();
        }


        $fieldArr = [
            "年级" => "grade",
            "班级" => "class",
        ];


        //加载文件
        $insert = [];
        try {
            if (!$PHPExcel = $reader->load($filePath)) {
                $this->error(__('Unknown data format'));
            }
            $currentSheet = $PHPExcel->getSheet(0);  //读取文件中的第一个工作表
            $allColumn = $currentSheet->getHighestDataColumn(); //取得最大的列号
            $allRow = $currentSheet->getHighestRow(); //取得一共有多少行
            $maxColumnNumber = Coordinate::columnIndexFromString($allColumn);
            $fields = [];
            for ($currentRow = 1; $currentRow <= 1; $currentRow++) {
                for ($currentColumn = 1; $currentColumn <= $maxColumnNumber; $currentColumn++) {
                    $val = $currentSheet->getCellByColumnAndRow($currentColumn, $currentRow)->getValue();
                    $fields[] = $val;
                }
            }

            for ($currentRow = 2; $currentRow <= $allRow; $currentRow++) {
                $values = [];
                for ($currentColumn = 1; $currentColumn <= $maxColumnNumber; $currentColumn++) {
                    $val = $currentSheet->getCellByColumnAndRow($currentColumn, $currentRow)->getValue();
                    $values[] = is_null($val) ? '' : $val;
                }
                $row = [];
                $temp = array_combine($fields, $values);
                foreach ($temp as $k => $v) {
                    if (isset($fieldArr[$k]) && $k !== '') {
                        $row[$fieldArr[$k]] = $v;
                    }
                }
                if ($row) {
                    $insert[] = $row;
                }
            }
        } catch (Exception $exception) {
            $this->error($exception->getMessage());
        }
        if (!$insert) {
            $this->error(__('No rows were updated'));
        }

        try {
            $not_exsit_school = [];
            $fail_insert = [];
            $success = $fail = $skip =0;
            foreach ($insert as $k => $v){
                $this->model = new \app\admin\model\GradeClass();
                $gradeModel = new \app\admin\model\Grade();

                if (!isset($v['grade']) || !isset($v['class']) ){
                    $this->error("导入模板不符合要求");
                }

                $grade= $v['grade'];
                $class= $v['class'];

                //查询学校是否存在 不存在进行创建
                $gradeData  = $gradeModel->where("gradeName",$grade)->find();
                if (!$gradeData){
                    $not_exsit_school[] = $grade;
                    continue;
                }else{
                    $grade_id = $gradeData->grade;
                }

                //判断班级不能重复
                $system_noHas = $this->model->where("grade_id",$grade_id)->where("name",$class)->count();
                if ($system_noHas){
                    $fail_insert [] = $grade."-".$class;
                    $skip++;
                    continue;
                }

                $re = $this->model->save([
                    "grade_id" => $grade_id,
                    "name" => $class,
                    "weigh" => 0,
                    "create_time" => time()
                ]);
                $re ? $success++ : $fail ++;
            }

        } catch (PDOException $exception) {
            $msg = $exception->getMessage();
            if (preg_match("/.+Integrity constraint violation: 1062 Duplicate entry '(.+)' for key '(.+)'/is", $msg, $matches)) {
                $msg = "导入失败，包含【{$matches[1]}】的记录已存在";
            };
            $this->error($msg);
        } catch (Exception $e) {
            $this->error($e->getMessage());
        }
        $msg = "操作成功，{$success}条导入成功，{$fail}条导入失败，{$skip}条数据已存在".PHP_EOL;
        if (count($not_exsit_school)){
            $msg .= "".implode(",",$not_exsit_school)."不存在，无法入库";
        }
        if (count($fail_insert)){
            $msg .= "".implode(",",$fail_insert)."已存在，无法入库";
        }
        $this->success($msg);
    }

    public function del($ids = null)
    {
        if (false === $this->request->isPost()) {
            $this->error(__("Invalid parameters"));
        }
        $ids = $ids ?: $this->request->post("ids");
        if (empty($ids)) {
            $this->error(__('Parameter %s can not be empty', 'ids'));
        }

        $pk = $this->model->getPk();
        $adminIds = $this->getDataLimitAdminIds();
        if (is_array($adminIds)) {
            $this->model->where($this->dataLimitField, 'in', $adminIds);
        }
        $list = $this->model->where($pk, 'in', $ids)->select();

        $count = 0;
        Db::startTrans();
        try {
            foreach ($list as $item) {
                //查询该学校是否存在老师或者学生 存在不能删除
                $data1= (new \app\admin\model\Schoolclass())->where("grade_id",$item->id)->count();
                $data2 = (new User())->where("class_id",$item->id)->count();
                if (!$data1 && !$data2){
                    $count += $item->delete();
                }
            }
            Db::commit();
        } catch (PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($count) {
            $this->success();
        }
        $this->error(__('没有数据或者选择的数据不允许删除'));
    }
}
